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At present, there are mainly problems in the mine shaft and roadway engineering, such as average speed and average work efficiency, high cost, poor engineering quality, and long construction period of mine engineering. The reason is that the management system is in urgent need of reform and the quality of the construction team is not high enough, mainly because the equipment quality is not high, the efficiency is low, the supporting level of mechanical equipment is not high, the cycle footage is small, the excavation support technology and the day of the soft rock layer The rapid ventilation technology of inclined shafts and long roadways needs to be improved.
Mine tunneling technology is a comprehensive applied science. The recent development trends of its main process technologies and equipment can be summarized as follows:
( 1 ) The ordinary tunneling method of the roadway with rock blasting as the main means will still be the main method of tunneling for a considerable period of time in the future. However, the turf drilling method has been greatly developed, and it is expected to become the main method of tunnel excavation in the next 10 years or so;
Mine tunneling technology is a comprehensive applied science. The recent development trends of its main process technologies and equipment can be summarized as follows:
( 1 ) The ordinary tunneling method of the roadway with rock blasting as the main means will still be the main method of tunneling for a considerable period of time in the future. However, the turf drilling method has been greatly developed, and it is expected to become the main method of tunnel excavation in the next 10 years or so;
( 2 ) In the common method of shaft excavation, the deep shaft excavation is mainly oriented towards large (increased equipment production capacity, large-capacity grab rock machine, large bucket, large winch, high-power suspension equipment), deep (medium-deep) Hole blasting), multiple (multi-machine rock drilling, multi-layer hanging plate), flat (digging, bricklaying parallel operation) direction development; shallow well drilling is moving towards light, less, convenient direction, that is, equipment should be light and quantity Less, moving is convenient. At the same time, the auxiliary work is mechanized;
( 3 ) The method of tunnel excavation will be developed in addition to the full-section drilling method. The underground small-diameter drilling rig will be developed with deep hole section blasting method. The culverting method will be obtained in the excavation high and blind patio. With more adoption, the proportion of the hanging tunneling method will be reduced, and the conventional tunneling method will be gradually eliminated in large and medium-sized mines;
( 4 ) While improving the productivity of single equipment, perfecting the matching of excavation equipment and forming a high level of excavation mechanized operation line, it has shown obvious superiority and development trend;
(5) During the construction process technology, and smooth blasting technology in the increasingly taken seriously, and will focus on drilling and blasting process is mainly to increase the depth of the blast hole, drilling machine with a reasonable selection, drilling and blasting parameters and enhance the explosive power etc. The work to improve the cycle footage, the blasthole arrangement and the charge will be standardized on the basis of rock blasting grading, and then the electronic computer will be used to optimize the selection of rock blasting parameters; anchor spray support and grouting and water shutoff Technology will be developed rapidly.
( 3 ) The method of tunnel excavation will be developed in addition to the full-section drilling method. The underground small-diameter drilling rig will be developed with deep hole section blasting method. The culverting method will be obtained in the excavation high and blind patio. With more adoption, the proportion of the hanging tunneling method will be reduced, and the conventional tunneling method will be gradually eliminated in large and medium-sized mines;
( 4 ) While improving the productivity of single equipment, perfecting the matching of excavation equipment and forming a high level of excavation mechanized operation line, it has shown obvious superiority and development trend;
(5) During the construction process technology, and smooth blasting technology in the increasingly taken seriously, and will focus on drilling and blasting process is mainly to increase the depth of the blast hole, drilling machine with a reasonable selection, drilling and blasting parameters and enhance the explosive power etc. The work to improve the cycle footage, the blasthole arrangement and the charge will be standardized on the basis of rock blasting grading, and then the electronic computer will be used to optimize the selection of rock blasting parameters; anchor spray support and grouting and water shutoff Technology will be developed rapidly.
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